Quarterly Financial Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								8 Months Ended	12 Months Ended
	Feb. 03, 2013 Store	Oct. 28, 2012	Jul. 29, 2012	Apr. 29, 2012	Jan. 29, 2012	Oct. 30, 2011	Jul. 31, 2011	May 01, 2011	Jan. 30, 2011	Feb. 03, 2013 Location Store	Jan. 29, 2012 Location
Quarterly Financial Information [Line Items]
Number of locations opened										4	2
Number of stores permanently closed	1									1
Pre-opening costs incurred	$ 1,262	$ 1,089	$ 559	$ 150	$ 1,428	$ 587	$ 1,431	$ 740	$ 842	$ 3,060	$ 4,186